* {
    margin: 0;
    padding: 0;
}

body,
html {
    width: 100%;
    height: 100%;
}

.classmanage {
    width: 100%;
    height: 100%;
    position: relative;
}

.classmanage .header {
    width: 100%;
    background-color: #fff;
    height: 8%;
    position: fixed;
    top: 0;
    padding: 0 30px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 2px 2px 8px 2px #ECF0F1;
}

.classmanage .header span {
    color: #000;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.classmanage .header span i {
    width: 3px;
    height: 15px;
    background-color: #0F6AB1;
    border: 2px;
    margin-right: 8px;
}

.classmanage .header div {
    width: 65%;
    height: 100%;
    display: flex;
    align-items: center;
}

.classmanage .header div input {
    height: 28px;
    padding: 0 15px;
    margin-right: 20px;
    font-size: 14px;
    outline: none;
}

.classmanage .header div input::placeholder {
    color: #C1C1C1;
}

.classmanage .header div input:last-of-type {
    margin-left: 20px;
}

.classmanage .header div button {
    background: none;
    border: none;
    padding: 5px 30px;
    background-color: #0F6AB1;
    color: #fff;
    font-size: 16px;
    letter-spacing: 3px;
    cursor: pointer;
}

.classmanage .header img {
    width: 25px;
    height: 25px;
    margin-right: 8px;
}

.classtable {
    width: 100%;
    height: 81%;
    background-color: #fff;
    box-sizing: border-box;
    /* margin-top: ; */
    position: absolute;
    top: 11%;
    box-shadow: 6px 5px 9px 4px #ECF0F1;
}

.classtable table {
    width: 100%;
    height: 90%;
}

.classtable table thead {
    height: 45px;
    text-align: center;
    line-height: 45px;
    background-color: #FBFCFF;
}

.classtable table tbody tr {
    height: 50px;
}

th,
td {
    text-align: center;
    font-weight: 500;
}

.operate button {
    cursor: pointer;
    background: none;
    border: none;
}

/* 修改学生信息 */
.open,
.del {
    width: 100%;
    height: 100%;
    background-color: rgba(6, 6, 6, .2);
    position: absolute;
    top: 0;
    left: 0;
    display: none;
    align-items: center;
    justify-content: center;
}

.open div,
.del div {
    width: 50%;
    height: 43%;
    background-color: #fff;
}

.open div b,
.del div b {
    width: 100%;
    height: 50px;
    text-align: center;
    line-height: 50px;
    background-color: #0F6AB1;
    color: #fff;
    display: block;
    font-weight: 500;
    font-size: 18px;
}

.open div form {
    width: 100%;
    height: 60%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 35px;
    box-sizing: border-box;
    margin-bottom: 10px;
}

.open div form p {
    height: 50%;
    line-height: 100%;
    text-align: right;
}

.open div form p span {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.open div form p span select {
    height: 25px;
    width: 164px;
    outline: none;
}

.open div form p input {
    height: 25px;
    border: 1px solid #C9C9C9;
    margin-bottom: 30px;
    margin-left: 20px;
    outline: none;
    box-sizing: border-box;
}

.open div span,
.del div span {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.open div span button,
.del div span button {
    background: none;
    border: none;
    background-color: #0F6AB1;
    color: #fff;
    padding: 7px 30px;
    box-sizing: border-box;
    border-radius: 8px;
    cursor: pointer;
}

.open div span button:first-of-type,
.del div span button:first-of-type {
    margin-right: 20px;
}


/* 分页功能实现 */
#pages {
    width: 100%;
    height: 10%;
    display: flex;
    align-items: center;
    justify-content: center;
}

a {
    text-decoration: none;
    color: #000;
}

#pages span {
    margin-right: 10px;
    cursor: pointer;
    border: 1px solid #ccc;
    padding: 5px;
}

#pages span#spanPre,
#pages span#spanNext {
    color: #ccc;
}